DRINKING WATER CASE STUDIES AND WHITE PAPERS

• EPA Proposed Revisions To The Lead & Copper Rule

  On October 10th, EPA Administrator Andrew Wheeler announced the long-awaited proposed revisions to the Lead and Copper Rule (LCRR) which was promulgated nearly 30 years ago under the Safe Drinking Water Act.

• A Better Way: An Application For Risk Characterization of HABs On The Ohio River

  When you think of water, you might imagine deep blue ocean waves crashing against a shoreline or perhaps the still calm of a forested lake, but on an August morning in the summer of 2015, the lockmaster at the Pike Island Lock and Dam saw something much different. That day, EPA’s regional office in Wheeling, WV, received a concerned phone call from the Ohio River Valley Water Sanitation Commission (ORSANCO) notifying them of what was described as “antifreeze-green colored paint” flowing down the Ohio River. But this was no paint spill. Rather, Microcystis, a naturally occurring species of cyanobacteria, or blue-green algae, known to produce toxins harmful to animals and humans, was quickly taking over one of the most influential rivers in the continental U.S.

• Not All AMI Systems Are Equal: 7 Features That Stand Out

  While every AMI system has specific advantages, the exact nature of those advantages depends heavily on the network itself and the technologies it leverages.

• Water Distribution System Challenges And Solutions

  Limited new natural water sources, especially in the southwest region of the USA, and rapidly increasing population has led to the need for innovative methods to manage a water supply system.

• How To Conduct A Pilot Test For Iron & Manganese Removal From Groundwater Using Manganese Dioxide Filter Media

  There are various treatment processes that are used to remove iron and manganese from ground water for potable water supplies.  While there are various less common treatment methods used (such as ion exchange and ultra-filtration), most treatment systems for iron oxidize the ferrous state of iron to a ferric state so the solid particles can then be filtered out.   

• Recouping Revenue With Accurate Water Meters - Ira Township, MI

  Ira Township in Fairhaven, MI used to have a variety of water meters with different reading technology—radio, touchread, automatic reading boxes and direct-read meters. On average, the meters were 19 years old and some were as old as 40 years. “With meters that old, we were not recouping all the revenue we should be,” says Chris Hiltunen, Ira Township Water & Department of Public Service Superintendent.

• The Digital Utility - Potential Of Smart Water Metering

  Using the latest and greatest technology has become commonplace. We use it every day to stay informed and connected. Today, utilities are leveraging digital technology by transforming tasks that were once manual to digital.

• Setting The Standard for Effective Chromium-6 Treatment

  When California capped chromium-6 in drinking water at 10 ppb in 2014, it became the only state to set a chromium MCL and, in so doing, created a challenge for water providers across the state.  WRT (Water Remediation Technology LLC) has met that challenge with the SMR™ (Selective Metals Reduction) Process.

• Drinking Water Treatment Plant (DWTP) Filtration System For Arsenic Removal

  The existing water treatment at the Toquepala Mine in Peru included only chemical disinfection to provide the local population with water only for non-potable purposes. An alternative solution was essential. 

• THM Removal System Successfully Removes Over 65% Of THM Species In Water Storage Tank At The End Of 60 Mile Transmission Line

  In Canada and the western United States, long treated water transmission lines are frequently utilized to convey potable water to rural communities. These long transmission lines combined with chlorine for water disinfection can often create the requisite conditions for the formation of undesirable disinfection-byproducts (DBPs). One of the most common DBPs is a family of volatile compounds called Trihalomethanes (THMs) which are regulated in Canada to a level of 100 ppb (part-per-billion) annual average and in the US to a level of 80 ppb.